Calcium carbide powder forming equipment and process for machining calcium carbide powder into calcium carbide balls or blocks

Abstract

The invention discloses calcium carbide powder forming equipment and a process for machining calcium carbide powder into calcium carbide balls or blocks. The equipment comprises a taper hopper. A pair of extrusion dies is disposed below the taper hopper. The extrusion dies are driven by power equipment to rotate along opposite directions and extrude each other. The lower-end outlet of the taper hopper faces directly to the extruding part of the two extrusion dies. A plurality of female dies are disposed on the outer surface of each extrusion die. The two extrusion dies are mounted in the cavity, filled with nitrogen, of a protective shell. Collected calcium carbide powder and mixed materials are mixed and then fed into the taper hopper, and the calcium carbide powder mixture enters the extrusion dies and is extruded by the female dies of the two extrusion dies to form the calcium carbide balls or blocks. By the calcium carbide powder forming equipment, the calcium carbide balls or blocks can be manufactured safely, calcium carbide powder dust flying is inhibited, the manufactured calcium carbide balls or blocks can be reused in acetylene generating kettles, even reaction speed and high gas generating quantity, and economical benefits are increased.

Description

technical field [0001] The invention relates to calcium carbide powder recovery equipment and technology, in particular to a calcium carbide powder forming equipment and a process for processing calcium carbide powder into calcium carbide balls or blocks. Background technique [0002] In 2012, the domestic production of PVC by the calcium carbide method reached 9.81 million tons, and the consumption of calcium carbide was 14.22 million tons. A large amount of calcium carbide powder will be produced during the process of crushing calcium carbide and transporting calcium carbide fragments by belt, about 180,000-250,000 tons per year. Calcium carbide powder can continue to generate gas and produce usable acetylene gas, but the recovery and reuse of calcium carbide powder has the following problems: [0003] First, the calcium carbide powder is too dusty and floats in the air to react with moisture, which makes it particularly difficult for workers to work, the work is difficult...

AI Technical Summary

Problems solved by technology

[0003] First, the calcium carbide powder is too dusty and floats in the air to react with moisture, which makes it particularly difficult for workers to work, the work is difficult, and the efficiency is low;

[0004] Second, the contact surface area of ​​calcium carbide powder and air is large, and it is too late to collect most of the calcium carbide powder and the moisture in the air has reacted, reducing the gas generation of calcium carbide powder;

[0005] Third, calcium carbide powder is put into the reaction tank after recycling, because the contact area is large and the reaction speed is too fast, it is easy to cause danger;

[0006] Fourth, the recycling of calcium carbide powder requires explosion-proof settings

Its processing cost is high, 50 yuan / ton

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